The different crystallographic phases of two stable isotopes of solid helium are analyzed by means of a law of corresponding states. From this analysis it follows that new phase transitions should occur, in particular solid· He3 should undergo a transition from a h. c. p. lattice to a f. c. c. lattice circa 1800 atm. and 18°K.
Bernardes, Newton, "On the different crystallographic phases of solid helium" (1961). Ames Laboratory Technical Reports. 41.